Bar type window operator



Nov. 20, 1962 H. L. STAVENAU 3,064,965

7 BAR TYPE WINDOW OPERATOR Filed Nov. 25, 1960 2 Sheets-Sheet 1 c M t flirngg N V- 20, 1 H. STAVENAU 3,064,965

BAR TYPE WINDOW OPERATOR 2 Sheets-Sheet 2 Filed Nov. 25, 1960 /3' a ,2 -23 44 a I -19 F6; H1 j f I j 43 71/ 57 42 l jd 6 3 55 Z I J0] 3,064,9o BAR TYPE WENDGW OPERATQR Harold L. Stavenau, Gwatonna, Minn, assignor to Truth Tool Company, a corporation of Minnesota Filed Nov. 23, 19613, Ser. No. 71,211 5 Qlaims. (Cl. 268-109) The present invention relates to operators for windows with swinging sashes and more particularly to operators wherein the lever portion can be swung either to the right or left to bring the window sash from a nearly closed position to a ti htly closed position.

At the present it is common practice to provide swinging window sashes with an operator to open and close them which consists of a short bar hinged to a portion of the window sash away from that portion of the sash which is pivotally secured to the window frame and a lever pivotally connected to the other end of the bar which may slide through a guide whenever the lever is aligned with the bar. In order to provide the force necessary to break the seal of a tightly closed window, a projection is provided on the lever which engages a stationary member to provide a lever arm action which multiplies the force of the person operating the lever to break the seal.

However, these operators have had two distinct disadvantages. The first is that for particular applications either a right hand or a left hand operator must be ordered because the lever is made to swing only in one direction from its alignment position with the bar. The second disadvantage is that frequent use of the operator will cause noticeable wear between the guide and the portion of the lever which rests against the guide to form a fulcrum for tightly closing a window sash.

Therefore it is an object of my invention to provide a new and improved operator for Windows with swinging sashes.

A further object of the present invention is to provide an operator having a lever which may be swung either to the right or the left to tightly close a window.

An additional object is to provide a sliding fulcrum for the lever of an operator whenever the lever is being utilized to bring the window sash from a near closed position to a tightly closed position or from the tightly closed position back to the nearly closed position.

Further objects and advantages will become apparent from the following detailed description taken in connection with the accompanying drawings.

In the drawings:

FIGURE 1 is a sectional view of a first embodiment of the present invention with the window sash in a near closed position, otherwise taken along the line 11 in FIGURE 2;

FIGURE 2 is a top elevation view of the first embodiment of the present invention with the operating lever aligned with the bar and the sash in a more open position;

FIGURE 3 is a bottom elevation view of the first embodiment with the lever positioned at a 45 angle to the bar;

FIGURE 4 is a bottom elevation view of the first embodiment with the lever positioned at a 90 angle to the bar;

FIGURE 5 is a sectional view of a second embodiment of the present invention with the window sash in a near closed position, otherwise taken along the line '55 in FIGURE 2;

FIGURE 6 is a top elevation view of the second embodiment of the present invention with the operating lever aligned with the bar and the sash in a more open position;

FIGURE 7 is a bottom elevation view of the second embodiment with the lever positioned at a 45 angle to the bar;

FIGURE 8 is a bottom elevation view of the second Patented Nov. 20, 1&8

embodiment of the present invention with the lever at a angle to the bar.

While this invention is susceptible of embodiments in many different forms, there is shown in the drawings and will herein be described in detail two embodiments of the invention with the understanding that the present disclosure is to be considered as an exemplification of the principles of the invention and is not intended to limit the invention to the embodiments illustrated. The scope of the invention will be pointed out in the appended claims.

Referring to FIGURES 1 through 4,. a window sash it? has a bracket 11 secured to its inner surface. A bar 12, consisting of a plate 13a and a plate 13b with a center member 14 rigidly secured therebetween by a pivot 15. is provided with slots 16 and 17 in the end portion of the center member 14 to receive a pair of prongs 18 and 19 of the bracket 11 for the purpose of providing a hinged connection between the bar 12 and the window sash 10. A latch member 211 is rotatably secured to the center member 14 by a pivot 21. With the latch member 20 in the locked position shown in FIGURES 3 and 4, lip portions 22 and 2-3 engage slots in the prongs 18 and 19 respectively to provide a hinged connection between the sash 10 and the bar 12. A projection 24 on the plate 13b engages a depression 25 in the center member 14 to prevent rotation of the center member relative to the plates 13a and 13b. A pivot 26 along with the pivot 15 maintains the plate 13a rigidly fixed in relation to the plate 13b and the center member 14. The pivot 26 also provides a rotatable connection between the bar 12 and an operating lever 30. An extension lever 3-1 is slidably connected to the lever 30 by slidable rivets disposed in a slot 32 of lever 30 and in a similar slot (not shown) in the lever extension 31. A handle 33 is formed at the end of the extension lever 31.

When the lever 30 is aligned with the bar 12, the combination may be slid through a guide 40 to move the window sash from a fully open position to a nearly closed position. The window sash is shown in the nearly closed position in FIGURE 1 and FIGURE 3. FIGURE 2 shows the window sash 10 in an intermediate open position. The guide 40 consists of a top housing member 41, a bottom housing member 42 and a plastic lining member 43 which is held in position by the housing members 41 and '42 and provides a smooth surface upon which the lever 31 and the bar 12 slide The window sash 10 may be positioned at any degree of opening by the manipulation of the handle 33 of the lever extension 31 when the lever 30 is aligned with the bar 12. To close the window sash 10 the handle 33 is manipulated by drawing it inward from the window sash 10 until the window sash is in the nearly closed position. This action brings a projection 44 which is rigidly mounted on the lever 30 through a slot 45 of the top housing 41 into an oval shape slot portion 46 in a lip portion of housing 41. The projection 44 is shown in the form of a roller rotatably mounted to the lever 30 by a pivot. Abutment or cam surfaces 47, 48 and 49 together with the projection 44 provide fulcrums for the lever action of the lever 30 as it is swung from and returned to an alignment position with the bar 12 in either a clockwise or a counterclockwise direction. FIGURE 3 shows the lever 31) after it has been swung 45 in a counterclockwise direction as viewed from the bottom. The projection 44 is shown sliding along the cam surface 48 providing a sliding fulcrum point about which the lever is being rotated. This rotation applies force on the sash 10 through the bar 12 and the pivot 26 to gradually bring the sash 10 from an early closed to a tightly closed position. This tightly closed position is illustrated in FIGURE 4. The

projection 44 has slid along the cam surface 48 to the one end of the slot 46.

When it is desired to reopen the tightly closed window the lever 30 is swung from the position shown in FIG- URE 4 back to an aligned position shown in FIGURE 2. The projection 44 will now bear and slide against half the abutment surface 49 to provide a sliding fulcrum about which the lever 30 rotates. The mechanical advantage provided by the lever 30 will overcome the tendency of the window sash 10 to stick in its fully tightly closed position.

If it is desired to swing the handle clockwise, the projections 44 will bear against the cam surface 47 to provide a sliding fulcrum while the handle is swung clockwise 90. Thus the window is tightly closed in the same manner that it was when the handle was swung counterclockwise from the aligned position. To open the window when the lever 30 is in the clockwise position the handle is merely rotated back to aligned position allowing the projection 44 to bear against the other half of the cam surface 49 to provide the required sliding fulcrum.

The guide 40 is rigidly secured to a window frame 50 by the screws 51 and 52.

FIGURES through 8 show the construction and operation of a second embodiment of the present invention. This embodiment utilizes all the same elements and members shown in the first embodiment by FIGURES 1 through 4 with the exception that the top housing member 41 has now been replaced by a housing member 6%} which utilizes a simpler construction at the sacrifice of having the lever 30 bear against the edge of the liner 43 whenever it is swung from an aligned position with the bar 12 to either a clockwise or counterclockwise position. No slots are provided in the top housing member 60 as was provided in the top housing member 41. As the window is moved from any open position to the nearly closed position, the projection 44 travels across the inside surface of the housing member 60 through a slot in the liner 43 until it has passed beyond the liner to engage a flange 61 which is bent down from a lip portion 62 of the top housing member 60. When the lever 30 is now swung counterclockwise a portion 63 of the lever 30 now bears against a portion 64 of the liner 43 to provide a fulcrum about which the lever 30 rotates. When the lever 30 is brought back from a counterclockwise position as illustrated in FIGURE 8 the projection 44, which is shown as a pin in this second embodiment, bears and slides against half of an abutment or cam surface 65 to provide a sliding fulcrum about which the lever rotates. Therefore the surface 65 performs the same function as did the surface 49 in the first embodiment of the present invention. As the handle is rotated clockwise from the. aligned position the portion 66 of the lever 30 bears against the.

portion 67 of the liner 43 to provide a fulcrum for the rotation of the sliding fulcrum lever to a clockwise position. Returning the lever from a clockwise position to the alignment position brings the projection 44 in contact.

with the other half of the cam surface 65 to produce the lever action as is produced by returning the handle from a counterclockwise position to the alignment position.

I claim:

1. An operator for opening and closing windows with swinging sashes comprising a guide mounted on a window frame structure, a bar and a lever sliding through said guide for opening and nearly closing a window sash whenever said lever is in an aligned position with said bar, said bar having one end adapted to be hinged to said window sash and the other end pivotally connected to one end of said lever to allow said lever to be swung from the aligned position to either a clockwise or a counterclockwise position relative to the aligned position, a projection on said lever, a first stationary cam surface positioned to be engaged by said projection to provide a sliding fulcrum for said lever as said lever is swung from the aligned position to either the clockwise or the counterclockwise position whereby said lever applies force on said window sash through said bar to bring said sash from a nearly closed position to a tightly closed position, a second stationary cam surface positioned to be engaged by said projection to provide a sliding fulcrum for said lever as said lever is swung from the clockwise position to the aligned position whereby said lever applies force against said sash through said bar to bring said sash from the tightly closed position to the nearly closed position, and a third stationary cam surface positioned to be engaged by said projection to provide a sliding fulcrum for said lever as said lever is swung from the counterclock wise position to the aligned position whereby said lever applies force against said sash through said bar to bring said sash from the tightly closed position to the nearly closed position.

2. An operator for opening and closing windows with swinging sashes comprising a guide mounted on a window frame structure, a bar and a lever sliding through said guide for opening and nearly closing a window sash when= even said lever is in an aligned position with said bar, said bar having one end adapted to be hinged to said window sash and the other end pivotally connected to one end of said lever to allow said lever to be swung from the aligned position to either a clockwise or a counterclockwise position relative to the aligned position, a roller rotatably mounted on said lever, a first cam surface aflixed to said guide for engagement by said roller to provide a sliding fulcrum for said lever as said lever is swung from the aligned position to the clockwise position whereby said lever applies force on said window sash through said bar to bring said sash from a nearly closed position to a tightly closed position, a second cam surface afiixed to said guide for engagement by said roller to provide a sliding fulcrum for said lever as said lever is swung from the aligned position to the counterclockwise position whereby said lever applies force on said window sash through said bar to bring said sash from a nearly closed position to a tightly closed position, and a third cam surface aflixed to said guide for engagement by said roller to provide a sliding fulcrum for said lever as said lever is swung from either the clockwise or the counterclockwise position to the aligned position whereby said lever applies force against said sash through said bar to bring said sash from the tightly closed position to the nearly closed position.

3. An operator for opening and closing windows with swinging sashes comprising a bar having one end normally hinged to a window sash, a lever having one end pivotally secured to the other end of said bar, a guide adapted to be mounted on a window frame structure and having a top and sides for slidably guiding said bar and said lever when said lever is aligned with said bar to open and to nearly close said window sash, a roller rotatably mounted on the top of said lever, an oval shaped slot having cam surfaces affixed in the top of said guide for engagement by said roller to provide a moving fulcrum for said lever whenever said lever is swung to either a clockwise or a counterclockwise position perpendicular to said bar to tightly close said window sash by applying force thereto through said bar and whenever said lever is swung back from either perpendicular position into alignment with said bar to apply force against said window sash through said bar, and a slot in one side of said cam to allow the said roller to enter said oval cam as the window sash is brought from an open position to a nearly closed position.

4. {kn operator for opening and closing windows with swinging sashes comprising a guide mounted on a window frame structure, a bar and a lever sliding through said guide for opening and nearly closing a window sashwhenever said lever is in an aligned position with said bar, said bar having one end hinged to said window sash and the other end pivotally connected to one end of said lever to allow said lever to be swung from the aligned position to either a clockwise or a counterclockwise position relative to the aligned position, said guide providing 5 a fulcrum for said lever as said lever is swung from the aligned position to either the clockwise or counterclockwise position whereby said lever applies force on said window sash through said bar to bring said sash from a nearly closed position to a tightly closed position, a projection on said lever, a stationary cam surface extending to each side of a centerline of said bar a distance greater than the distance from the pivotal connection of said lever and bar to the projection on said lever and positioned to be engaged by said projection to provide a sliding fulcrum for said lever as said lever is swung from either the clockwise or counterclockwise position to the aligned position whereby said lever applies force against said sash through said bar to bring said sash from the tightly closed position to the nearly closed position.

5. An operator for opening and closing windows with swinging sashes comprising a guide having a top and side portions and adapted to be mounted on a window frame structure, a bar and a lever sliding through said guide for opening and nearly closing a window sash whenever said lever is in an aligned position with said bar, said bar having one end hinged to said window sash and the other end pivotally connected to one end of said lever to allow said lever to be swung from the aligned position to either a clockwise or counterclockwise position relative to the aligned position, said guide providing a fulcrum for said lever as said lever is swung from the aligned position to either clockwise or counterclockwise position whereby said lever applies force on said window sash through said bar to bring said sash from a nearly closed position to a tightly closed position, a pin mounted on top of said lever, a flange, extending downwardly from the top portion of said guide and laterally to each side of a centerline of said guide a distance greater than the distance of the pivotal connection of said lever and bar to the projections on said lever, for engagement by said pin to provide a sliding fulcrum for said lever as said lever is swung from either the clockwise or counterclockwise position to the aligned position whereby said lever applies force against said sash through said bar to bring said sash from the tightly closed position to the nearly closed position.

References Cited in the file of this patent UNITED STATES PATENTS 2,736,595 Erickson Feb. 28, 1956 

